/*      $NetBSD: timekeeper.c,v 1.13 2008/04/28 20:23:29 martin Exp $   */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Attachment interface for the Time-Keeper RAMs on mvme boards.
*
* XXXSCW: Needs to be extended to allow read/write to NVRAM by
* userland application.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: timekeeper.c,v 1.13 2008/04/28 20:23:29 martin Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/conf.h>

#include <machine/cpu.h>
#include <machine/bus.h>

#include <dev/mvme/clockvar.h>

#include <dev/ic/mk48txxreg.h>
#include <dev/ic/mk48txxvar.h>

#include <mvme68k/dev/mainbus.h>

#include "ioconf.h"

int timekeeper_match(device_t, cfdata_t, void *);
void timekeeper_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(timekeeper, sizeof(struct mk48txx_softc),
   timekeeper_match, timekeeper_attach, NULL, NULL);

int
timekeeper_match(device_t parent, cfdata_t cf, void *aux)
{
       struct mainbus_attach_args *ma = aux;

       if (strcmp(ma->ma_name, timekeeper_cd.cd_name))
               return (0);

       return (1);
}

void
timekeeper_attach(device_t parent, device_t self, void *aux)
{
       struct mk48txx_softc *sc = device_private(self);
       struct mainbus_attach_args *ma = aux;
       bus_size_t size;

       sc->sc_dev = self;
       sc->sc_bst = ma->ma_bust;

       if (machineid == MVME_147) {
               size = MK48T02_CLKSZ;
               sc->sc_model = "mk48t02";
       } else {
               size = MK48T08_CLKSZ;
               sc->sc_model = "mk48t08";
       }

       bus_space_map(sc->sc_bst, ma->ma_offset, size, 0, &sc->sc_bsh);

       sc->sc_year0 = YEAR0;
       mk48txx_attach(sc);

       aprint_normal(" Time-Keeper RAM\n");
       aprint_normal_dev(self, "%ld bytes NVRAM plus Realtime Clock\n",
           sc->sc_nvramsz);
}